Xylem Bell & Gossett GLC Series User manual

GLC series pipeline pump
Installation Manual
Please leave the manual to the user
Read the instructions carefully before Installation,
operation and maintenance

Content
1. General
1.1 Preface......................................................................................................................................... 1
1.2 Commitment .............................................................................................................................. 1
1.3 Safety regulation ........................................................................................................................ 1
1.4 Safety instructions...................................................................................................................... 2
2 Introduction of pump ................................................................................................................... 3
2.1 Configuration and application ................................................................................................. 3
2.2 Type and technical parameters................................................................................................. 3
2.3 Nameplate .................................................................................................................................. 4
3 Shipping, handling and storage .................................................................................................. 4
3.1 Shipping & handling.................................................................................................................. 4
3.2 Storage ........................................................................................................................................ 5
4 Installation .................................................................................................................................... 5
4.1 pump installation ...................................................................................................................... 5
4.2 Coupling installation (part of pump are equipped with coupling) ....................................... 6
4.3 Piping connection....................................................................................................................... 7
4.4 Electrics connection .................................................................................................................. 7
5. Operation...................................................................................................................................... 7
5.1 Preparation and checklist prior to startup ............................................................................. 8
5.2 Priming........................................................................................................................................ 8
5.3 Startup ........................................................................................................................................ 8
5.4 Operation and monitoring ........................................................................................................ 8
5.5 Shutdown .................................................................................................................................... 8
5.6 Dismantling................................................................................................................................. 9
5.7 Allowed startup numbers .......................................................................................................... 9
6 Service ............................................................................................................................................ 10
7 Maintenance .................................................................................................................................. 10
8 Trouble and troubleshooting ........................................................................................................ 10
9 Assembly diagram......................................................................................................................... 12
9.1 Vertical single pipeline pump (without coupling) ................................................................... 12
9.2 Vertical single pipeline pump (with coupling) ........................................................................ 13
9.3 Vertical double pipeline pump (with mechanical seal) .......................................................... 14
10 Spare parts and pumps .............................................................................................................. 15
10.1 Spare parts ............................................................................................................................... 15
10.2 Spare pumps ............................................................................................................................ 15
11. Equipment administrator list.................................................................................................... 16
12. Log book .................................................................................................................................... 17
13 Appendix ..................................................................................................................................... 18

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Minimum flow
If the pump starts with the valve closed, the energy that
pump delivered to the liquid is transferred in the form
of heat, which may result in rapid temperature increase
of liquid in a short time, cause damage to the parts
and components inside the pump. Therefore, quickly
open the water discharge valve when the pump reaches
operating speed. In case the operating conditions of
pump inevitably reaches zero flow or the hot water is
in circulation, related overflow valve must be provided
or a bypass line should be provided for smaller system.
It is recommended to determine a min. flow or design
an auxiliary line
Zero load protection
In no case the pump is allowed to run with zero load
as such operation will result in extra high pump
temperature and damage the parts and components of
pump (e.g. mechanical seal).
Backflow
When the system runs under pressure in a closed status,
the pressure cannot be reduced via pump, as it may
cause a backflow speed far above the pump speed and
thus damage the system
When using, the user should consider the effect of
various factors on the use, and its maximum suction
height H should be lower than the calculated value
below (negative value should be inverted). Otherwise,
the pump will not work properly.
Pb: local atmospheric pressure unit bar(sea level is
1bar)
NPSHr: water pump must be cavitation margin, unit m
Hf: loss of inlet pipe in m
Hv: liquid saturated vapor pressure unit is m (converted
to water column height)
Hs: safety margin in m (usually 0.5m)
Such as:
Pb=1bar, pump cavitation margin NPSHr=2m,
Pipe loss Hf=2m, safety margin Hs=0.5m
When liquid temperature 40 ℃ saturated vapor
pressure
Hv=Pv/ min, g=0.7m (converted to height of water
column)
H = 1 x 10.2-2-2-0.7-0.5 = 5 m
2 Introduction of pump
2.1 Configuration and application
GLC series pipeline pump is a single stage single
suction vertical centrifugal pump with extended shaft
design and with no bearing body component at the
pump head; the suction and discharge flanges of the
pump are of the same size and the flange centerlines
are at the same axis. The pump rotates clockwise
viewing from the driving end. This pump is suitable
for heating system, air conditioning system, cooling
system, water supply and other industrial systems.
2.2 Type and technical parameters
2.2.1 Vertical single pipette pump
GLC 50 - 160 - 3kW/2
Number of poles of electric motor,
For example, 2-2P
Rated output of electric motor(kw)
For example, 3-3kw
Nominal diameter of
impeller(mm)
For example, 160=160mm
Suction/discharge diameter of
pump (mm)
For example, 50-DN50
Product series--GLC series
product
Technical parameters:
Maximum flow rate: 1900m3/h
Maximum head: 160m
Work pressure: 1.6mpa, 2.5mpa (please check Xylem)
Inhalation pressure: less than 1.0mpa (greater than
1Mpa, please consult Xylem)
Medium temperature: 15 ℃ ~ + 120 ℃
Seal: mechanical seal
Inlet and outlet diameter: DN40 ~ DN350
Inlet and outlet flanges conform to GB/T 17241.6
standard
It can also be produced according to user requirements

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2.2.2 Vertical double pipette pump
Technical parameters:
Maximum flow rate: 2100m3/h
Head: 10 ~ 46m
Rated working pressure: 16bar (for import pressure
greater than 6bar or working pressure greater than
16bar, please refer to Xylem)
The medium temperature: 15 ℃ ~ + 120 ℃
Seal: there are two types of mechanical seal and
packing seal
Inlet and outlet diameter: DN250 ~ DN350
Inlet and outlet flanges conform to GB/T 17241.6
standard
It can also be produced according to user requirements
Nominal diameter of impeller (mm)
For example, 350=350mm
Discharge diameter of pump (mm)
For example, 350=DN 350mm
Suction diameter of pump (mm)
For example, 350=DN 350mm
Product series-GLC series product
GLC 350 - 350 - 350
2.3 Nameplate
Every product from Xylem has its own nameplate
indicating basic information of the product as shown in
Fig. 1.
The designation on the nameplate is a permanent
number to record the pump information, which must
be mentioned in related purchase order and ordering
process of spare parts.
Note! Please refer to"5.4 Operation and monitoring"
and "6 Service" in this manual for more information on
the mechanical seal and potentialrisks3
3 Shipping, handling and storage
3.1 Shipping handling
Check in time if any part is damaged during the
shipping and receiving process of pump. The pump
must be shipped by professional personnel in order to
prevent collision. When delivered from the factory,
avoid changing the orientation of the pump and pay
attention to the instructions on the packing.
Seal the suction/discharge of the pump during shipping
and storage.
Note! All packing material should be disposed of
according to local laws and regulations
The lifting devices (such as fork lift, crane, pulley, rope
and etc. ) must be adequately safe. The weight of pump
or electric motor can be found on the nameplate.
The pump set should be lifted as shown in Fig. 2.
When the electric motor has no lift lug，it should be
bound and located with nylon tapes
It is prohibited to stand below lifted load. Please obey
the regulations to prevent accident. The pump or pump
set cannot tip or fall before it is finally located.
It is prohibited to stand below lifted load.
Please observe the rules to prevent accidents.
The pump or pump unit cannot tip or fall before
it is finally located.
Fig.4

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3.2 Storage
In case of long period storage, make sure that the pump
or pump set is protected from humidity, vibration and
filth (it may be wrapped with waterproof oil paper or
plastics). Basically the pump cannot be stored in nude
and should be covered. During the storage period, all
suctions/discharges must be sealed with flange cover
plug.
Fig.5
Fig.6
4 Installation
4.1 Pump installation
The installation of pump should reserve sufficient
space for the maintenance and service activities,
especially for replacement of the driving motor or the
entire pump set, as shown in Fig.3.
The concrete base must be able to absorb vibration
effectively; The base shall provide a permanent
and solid foundation for the pump unit and shall be
constructed in accordance with local conditions. When
installed without vibration isolation, the base platform
of the pump should be 100~150mm wider than the
width around the base of the pump set. When installed
with vibration isolation, the vibration damping
platform should be 150mm wider than the water pump
vibration isolation base. Elevation on top of foundation
shall be higher than 100mm above pump room
ground without vibration isolation installation, and
above 50mm above pump room ground completion
surface with vibration isolation installation, and water
accumulation shall not be formed as shown in figure
7. The peripheral area of the foundation is provided
with drainage facilities to facilitate the drainage or the
elimination of leakage during maintenance. The oil,
gravel, soil and water should be clear and clean in the
hole reserved by the water pump foundation surface
and anchor bolts. The thread and nut of the embedded
anchor bolts shall be well protected. The surface of the
placer should be chiselled. Before the installation of
the equipment, the surface of the foundation secondary
grouting layer shall be scooped into a hemp surface
with a depth of no less than 10mm and no less than 3
points per square metre.

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4.2 Mounting of coupling (some models are equipped
with coupling)
Power must be cut off or switched off before
maintenance operation.
Installation steps:
1. Check the water pump and motor shaft to remove all
burrs, rust, etc.
2. Install the positioning ring 2 and screw 4 onto the
motor shaft, and locate the ring end face level with the
motor shaft end face, then use the electric drill to spot-
face the motor shaft, and the position corresponds to
that of screw 4.
3. Install the positioning plate 3 and lifting bolt 8 onto
the pump shaft without tightening. The positioning
plate can be moved up and down.
4. Align the groove of the coupling with locating ring
2 before adjusting locating plate 3, so that the coupling
can be installed smoothly on locating ring 2 and
locating plate 3.
5. Tighten the lifting bolt 8 on the pump shaft end until
it is in place to lift the rotor assembly.
6. Then install the other half coupling on the locating
1. Coupling 2. Positioning ring 3. Positioning plate
4. Screw 5. Bolt 6. Washer
7. Nut 8. Lifting bolt
Installation of the coupling must be very careful so
that the pump runs reliably for long periods of time.
Incorrect coupling installation causes noise and
vibration, as well as damage to sliding bearings and
seals.
Fig. 8 Schematic diagram of coupling structure
Fig.7
1-Concrete base 2-Shock absorber
Pump installation procedure:
a)The anchor bolts are mounted through the holes on
pump base and align the pump suction flange with the
pipeline flange.
b)Perform the first grouting till 20-30mm below
the pump base. Do not move the equipment during
grouting and" the anchor bolts should be placed
vertically in the foundation holes.
b)When the concrete is completely cured, align the
pump suction/discharge flange and pipeline flange
again and perform the second grouting till the pump
base.
ring 2 and locating plate 3.
7. Then screw down bolt 5, nut 7 and washer 6 evenly.
Check the middle joint of the coupling.
8. Disk coupling, it is confirmed that the impeller
and shaft assembly can rotate normally, and the shaft
hopping between the coupling and the gland is not
greater than 0.1mm.
9. Finally install the coupling guard.

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